NDLI: Symmetry in the search space

Content Provider	IEEE Xplore Digital Library
Author	Van Hoyweghen, C. Naudts, B.
Copyright Year	2000
Description	Author affiliation: Dept. of Math. & Comput. Sci., Antwerp Univ., Belgium (Van Hoyweghen, C.)
Abstract	The presence or symmetry in the representation of an optimization problem can have a positive or a negative influence on the dynamics of a search algorithm. Symmetry can cause a genetic algorithm or simulated annealing to get stuck in a local optimum, but it can also help an algorithm to find the optima more quickly, as the dual genetic algorithm does in some cases. The first part of the paper describes three common types of symmetry and their effects on evolutionary algorithms. Next to obvious permutations on the string representation leaving the objective value invariant, the interaction structure of the problem can be a source of symmetry. Typical examples can be found in the class of aggregated problems, studied in the second part of the paper. An abstract model for aggregated problems is introduced together with a strategy to overcome their symmetry.
Starting Page	1072
Ending Page	1078
File Size	685896
Page Count	7
File Format	PDF
ISBN	0780363752
DOI	10.1109/CEC.2000.870766
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-07-16
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Genetic algorithms Simulated annealing Evolutionary computation Context modeling Intelligent systems Mathematics Computer science Electronic mail Computational modeling Search problems
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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